David,
Here is a link to the international warranty upgrade. http://support.leica-camera.com/fileadmin/user_upload/docs/Warranty_e_M9_conditions.pdf It states that this program is transferrable for the M9. I do know that the laws for EU countries differ from the US warranty laws.
As of today, the cost is $411 in US dollars. I will be getting this so that when/if within this year that I sell my M9, it will at least have a warranty for the new buyer.
-Al